It seems I am having problems expressing my thoughts, people don’t understand what I am trying to say=(
What I've meant is to have one allocation instead of two, yes, exactly. Back to the topic - in case we really want to support the "stack case", I’d say shared_ptr is the only option (in combination with enable_shared_from_this which is already a kinda part of QObject, as mentioned above) > 3 мая 2019 г., в 23:54, Giuseppe D'Angelo via Development > <development@qt-project.org> написал(а): > > Il 03/05/19 23:03, Иван Комиссаров ha scritto: >> I’d say it’s an implementation detail - it *is* possible to implement the >> creation of QObjects more efficient than it is done now without «forcing» >> user to use objects on stack to avoid allocations. > > Unless you also sacrifice binary compatibility, it's not possible. > > What it is possible is to have one allocation instead of 2 (the object and > its dpointer), that's already been worked upon with a custom operator new, > check the patches on gerrit. > > Anyhow this is entirely orthogonal to the original problem at hand: > ownership. We need to support the case of objects created on the stack (not > owned and owned). > > Cheers, > -- > Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Senior Software Engineer > KDAB (France) S.A.S., a KDAB Group company > Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com > KDAB - The Qt, C++ and OpenGL Experts > > _______________________________________________ > Development mailing list > Development@qt-project.org > https://lists.qt-project.org/listinfo/development _______________________________________________ Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development
